I run the marketing for a mini casino in Washington. We use slicktext.com I absolutly love thier system. We have about 1200 members and average about a 16% return on our weekly texts.
That is a great result! How many messages do you average per month with your 1500 members? The industry average is about 20%. We add a few things for quite a bit less money if you are interested in saving some money. Although we do ask for
Either a 6 or 12 month term. Usually people stick with what they are happy with:) Also as a tip I have found offering a text to win contest gets amazing results! Here are some tips!
https://www.youtube.com/watch?v=cIVwyq5gxIc